{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "89443439",
    "entityType": "User",
    "nonce": "0xb429d4fc2d840c609abb8ebd2373ab7d30d5ab3ec101919699aa7f175a69ea14",
    "signature": "0x1344be437b2a1c070a558da65710e15d18a49bf351d0a1071f39ee18478270fe52de2159075b64d2e354fa8f0b482f64ec431bf796610689f5de449028feb1f51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}